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Construct a valid C++ code for printing the first 10 numbers of the Fibonacci sequence
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#include <iostream> 
  
int main() 
{ 
    int n1 = 0, n2 = 1, n3, i, number; 
  
    std::cout << "Enter the number of elements: "; 
    std::cin >> number; 
    std::cout << n1 << " " << n2 << " "; // printing 0 and 1 
  
    for (i = 2; i < number; ++i) // loop starts from 2 because 0 and 1 are already printed 
    { 
        n3 = n1 + n2; 
            std::cout << n3 << " "; 
            n1 = n2; 
            n2 = n3; 
    } 
    return 0; 
}